mod
E21S's Copper upgradeMinecraft mod for 1.21.8
The mod allows you to upgrade your tools with copper, making copper a more sought after resource
- Latest version
- 2.1
- Minecraft
- 1.20.1 to 1.21.8
- Java
- Java 21+
- Loaders
- Forge, NeoForge
- Licence
- LicenseRef-All-Rights-Reserved
- Downloads
- 337
- Updated
- 7 mo ago
- Available on
- Modrinth
Our hostingHost E21S's Copper upgrade servers
One click and E21S's Copper upgrade is installed with the right loader, on hardware built for it.
- 1.21.8
- Forge
- NeoForge
- One click mod install
- Loader matched for you
- Ryzen CPUs
- NVMe SSD
Screenshots
Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.
Minecraft versions
Every version E21S's Copper upgrade declares support for, newest first, with the Java runtime that version needs.
Download
From E21S's Copper upgrade’s own host. Nothing is re-hosted here.
For Minecraft 1.21.8
Choose the loader you use before downloading.
- Get NeoForge
NeoForge
1.1.3 · 30 Oct 2025 · es_copper_update-1.1.3-neoforge-1.21.8.jar
Most recently published release
es_copper_update-2.1-forge-1.20.1.jar · 0.2 MB · for 1.20.1 · Forge
519858340b13…Older versions9Hide older versions
- 2.0.214 Feb 20261.20.10.2 MB26 downloads
d30c74fa578e…Get - 2.0.11 Feb 20261.20.10.2 MB20 downloads
2cb1586d2343…Get - 2.027 Jan 20261.20.10.2 MB14 downloads
3f0d9a292a1a…Get - 1.1.330 Oct 20251.21.81.0 MB15 downloads
4fa137467b2b…Get - 1.1.227 Jun 20251.21.41.0 MB36 downloads
729c1e168238…Get - 1.1.126 Jun 20251.21.41.0 MB72 downloads
4b20acab048c…Get - 1.1.024 Jun 20251.21.471 KB22 downloads
fea6208034d5…Get - 1.0.130 May 20251.20.165 KB27 downloads
363a98bc731a…Get - 1.0.023 May 20251.20.127 KB29 downloads
f49749793d39…Get
Frequently asked
Does E21S's Copper upgrade work on Minecraft 1.21.8?
Yes. 1.21.8 is the newest Minecraft version E21S's Copper upgrade declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.
Which Minecraft versions does E21S's Copper upgrade support?
Everything the author has declared, from 1.20.1 up to 1.21.8. The full list is in the table above, with the Java runtime each version needs next to it.
Do I need to install E21S's Copper upgrade on the client or the server?
Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.
Which platform or loader does E21S's Copper upgrade support?
Forge, NeoForge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.
Which Java version do I need for E21S's Copper upgrade?
Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.
What licence is E21S's Copper upgrade under?
LicenseRef-All-Rights-Reserved, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.
How do I install E21S's Copper upgrade?
Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.
Where do I download E21S's Copper upgrade safely?
Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.
Works on the same versions
Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.
Is this information wrong or missing something? .